Reenforced container



April 8, 1930. I E. F. HULBERT 1,753,929

REENFORCED CONTAINER Filed Feb. 17, 1928 IN VEN TOR.

EMT/14.9%?"

A TTORNEYS Paten'ted Apr. 8, 1930 UNIT STATES PATENT OFFICE EDWIN I.HUIBEBT, OF OWEN, WISCONSIN, ASSIGNOB TO THE MASTER PACKAGE CORPORATION,OI OWEN, WISCONSIN, A CORPORATION 01' DEAWABE REENFOROED CONTAIN EBApplication filed February 17, 1928. Serial No. 255,086.

The invention relates to containers.

The object of the invention is to provide a closure for fibre bodiedcontainers in which the head is firmly aflixeil to the siding which isreenforced on both sides by a pair of metal bands which haveinterlocking engagement with each other, these bands being interlockedin such a way that the free edges of the tubular body wall and headingor closure members are solidly compressed and bonded within the inclosedgrip of the interlocking bands. The compression of the fibre portionsand the tubular form which the steel takes in its final position form asolid, hard, shock- 16 resisting, metalwshod edge that is very desirablein shipping drums or containers used in transporting products in freightshipments or where the package is subjected to rough handling or abuse.

an The invention further consists in the several features hereinafterset forth and more particularly defined by claims at the conclusionhereof.

In the drawings Fig. 1 is a detailed perspective view of a containerembodying the invention, parts being broken away and parts being showninsection; i

Fig. 2 is a detail sectional view showing the container parts in theirinitial osition and associated with apparatus for orming the closure;

. Fig. 3 is a view similar to Fig. 2 showing the parts in anintermediate position;

Fig. 4 is a view similar to Fig. 2 showing the parts in final position.

. The subject matter of the invention relates to the constructionemployed for connecting the head to thesiding of the container or itscover, and since it is equall applicable for either the. cover or bodyof t e container the container alone has been shownin detail for thepurpose of explaining the invention. The siding 5 of the, container isof fibre tubing, either of pressed pulp or a number of wrappings ofpaper or fibre sheets and is generally in the form of cylindrical orconical tubing.

The head 6 is of fibre, consisting of one or more paper or fibre sheetsor laminations with one or more of these laminations, as

' small projecting bead 16 that is embedded here shown, bent at an angleadjacent its edge to form a dished head having a flange 7, though itwill be understood that the invention is not to be limited to a dishedhead container.

A metal band 8, of thin sheet-steel or other suitable sheet metal,having an outwardly extending base flange 9 is secured to the siding andthe head in the present instance by bending a part 10 of the extendedend. 11 of the siding over the head and bending the outer portion 12 ofthe band'around the extended end 11 of said siding whereby the siding isfirmly clamped to the head band 8 and in the present instance this headband also clamps the flange 7 of the head between it and the extendedend of the siding. While this is the preferred construction, as regardsthe head band 8 and its association with the head, reference is heremade to my prior United States Letters Patent Nos. 1,590,751, 1,590,752and 1,590,756, of June 29, 1926, as to'other specific forms ofconnection between the head band and the head and which may be used inplace of the detailed construction here shown and described withoutdeparting from the broad feature of the invention, which is theinterlocking association of the head band with a sheet metal siding band13, while the head is firmly held in place, and more particularly wheresuch bands are associated with a portion of the siding offset inwardlyover the head.

As shown the band 13 surrounds the sidin proper and extends up over theouter side 0 the extended end 11 of the siding and is bent therewithinto interlocki engagement with the internal edge 14 of t e band 8, asshown in Figs. 1 and 4.

A method of forming the container is here shown in Figs. 2 to 4:,inclusive. The siding 8 and band 13 are firmly held between an internalexpanding chuck 15 and an external contracting chuck 16 which preferablyhas'a into the siding during the chuckin operation so as to prevent anypossibility o lon 'tudinal movement thereo The head 6, w ich is insertedinto and fits within the siding, is clamped between the chuck 15 and aclamping plunger 17 while the band 8 is positioned against the head andcentered by said plunger 17, as'shown in Fig. 2. With the parts thuspositioned a contractible forming die 20 having an annular curved ribportion 21 is moved inwardly against the upper end of the band 13 andbends the same, together with the extended edge of the siding, over thehead and against the band 8. Thereafter an annular forming die 22,having-a curved face 23, is moved downwardly between the die 20 and theplunger 17 to bend or curl the upper edge of the band 8 over theextendededge of the siding to an intermediate position, shown in Fi 3, and thento the final position shown in Iig. 4, the upper ed e of the rib portion21 assisting in curling t e outer edge of the band 13 u intolnterlocking engagement with the ro ed edge of the band 8 and siding.

This combination of the head, siding, and head and siding bands producesa .very strong closure and one that may be distorted from its originalform by rough handling when loaded without producing rupture or leakageof the contents of the container.

I desire it to be understood that this invention is not to be limited toany particular form or arrangement of parts except in so far as suchlimitations are specified in the claims.

What I claim as my invention is:

1. In a container, the combination with the head and fibre siding, of areenforcing metal band associated with said head and siding, andareenforcing metal band for the outer side of the siding havinginterlocking rolled lcJrim ed engagement with said first-name 2. In acontainer, the combination with the fibre siding and a head fitting,within the same, the end of said siding extending beyond the body ofthe'head, of a reenforcing metal band engaging the head and the extended end of sai siding, and a reenforcing metal band for the outerside of the siding having interlocking rolled, crimped engagement withsaid first-named band.

3. In a container, the combination with the.

fibre siding and a head fitting within the same, said sidin havinga-portion extending over and beyon the head, of a reenforcing metal bandenga 'ng the head and the extended end of said siding, and a reenforcingmetal band for the outer side of the siding having interlocking rolled,crimped engagement with said first-named band.

4. In a container, the combination of a fibre siding, a dished headfitting with the siding and having its flange portion associated with anextended end of said siding, a reenforcing metal head band in clampingengagement with said flange portion and the extended end of said siding,and a reenforcing metal band engaging the outer side of said siding 66and having rolled, crimped engagement with the extended end of saidsiding and said head and.

5. In a container, the combination of a fibre siding, a dished headfitting within the sidin and having'its flange portion associated wit anextended end of saidsiding, a reenforcin metal head band bent with theextended en of said siding over a portion of said head and havingclamping engagement with said flange portion and the extended end ofsaid siding, and a reenforcing metal band engaging the outer side ofsaid siding and having rolled, crimped engagement with the extended endof said siding and said headband.

In testimony whereof I aflix my signature. 80

.EDWI F. HULBERT.

